转一篇关于发烧线的文章!!!
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[27 楼] crowspal
[陈年泡菜]
13-7-28 01:24
:)
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[26 楼] fumac
[陈年泡菜]
13-7-28 01:07
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[25 楼] sz517
[泡菜]
13-7-28 01:05
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[24 楼] eltonhuang
[泡菜]
13-7-28 01:04
shevechenkom8 发表于 2013-7-28 00:36 你看来很熟录音界的事情,相信你清楚帮欧美著名交响乐团录音的那些录音室里的近场和远场监听音箱和配套器材值售价是多少? 指标是多少?照你上面的计算方式,HIVI那几个RMB 2000-3000 SPL指标正负1.5dB的监听喇叭换掉他们的设备,绰绰有余. |
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[23 楼] fumac
[陈年泡菜]
13-7-28 01:01
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[22 楼] sz517
[泡菜]
13-7-28 00:59
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[21 楼] fumac
[陈年泡菜]
13-7-28 00:53
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[20 楼] sz517
[泡菜]
13-7-28 00:50
完毕!
![]() 传输方式的不同造就的损失有目共睹,我相信信号线对声音一定会有影响,多少而已。。。平衡线192K 本帖最后由 sz517 于 2013-7-28 00:52 编辑 |
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[19 楼] sz517
[泡菜]
13-7-28 00:50
AES,96K
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[18 楼] sz517
[泡菜]
13-7-28 00:49
75欧同轴192K
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[17 楼] sz517
[泡菜]
13-7-28 00:47
75欧同轴96K
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[16 楼] sz517
[泡菜]
13-7-28 00:46
50欧同轴-96K
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[15 楼] 弟大物博2012
[禁言中]
13-7-28 00:46
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[14 楼] eltonhuang
[泡菜]
13-7-28 00:45
FUMAC为了表达得简单些,刚才列的还是单频点纯阻抗的简化计算.把音频范围各频点的阻抗※※/晶体管场效管变化的输出阻抗/分频器和磁路※※及扬声器反向电动势后级反馈的模型加上去,这条线上的微小变化,已经足够引起整个信号链上大量频点小信号的AM/PM变化,如果再加上信号的各种调制......
谁用空把这个模型详细建一次模,保证线材还能再涨价 ![]() 至于能不能听出,那确实是各人的事了. 本帖最后由 eltonhuang 于 2013-7-28 00:49 编辑 |
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[13 楼] sz517
[泡菜]
13-7-28 00:45
再转一篇各种信号线的测试结果。。。(与线关系不大,和传输方式有关)
几种不同信号线在传输数字信号时的JITTER眼图测试 信号线96K 本帖最后由 sz517 于 2013-7-28 00:55 编辑 |
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[12 楼] sz517
[泡菜]
13-7-28 00:36
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[11 楼] shevechenkom8
[泡菜]
13-7-28 00:36
hi-fi 那啥B最多
说白了 hi-fi就是高保真,原汁原味还原录音而已!! 所有设备里就是有源监听最容易达到要求,频响曲线正负2DB内。 很多号称HI-FI设备,连国标高保真频响曲线正负3DB都做不到! 什么咸菜,蛋味,EQ乱七八糟的只是增加失真,有的人自己乱加盐加糖、吃惯了服务员的口水、死咸、苦涩或糖精的大餐硬说那就是大餐的味道,却不知道大厨做出来的比原汁原味差到哪去了!! |
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[10 楼] fumac
[陈年泡菜]
13-7-28 00:33
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[9 楼] sz517
[泡菜]
13-7-28 00:30
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[8 楼] fumac
[陈年泡菜]
13-7-28 00:27
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[7 楼] sz517
[泡菜]
13-7-28 00:24
fumac 发表于 2013-7-28 00:20 我买了一对银线伺候你的前级 |
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[6 楼] fumac
[陈年泡菜]
13-7-28 00:21
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[5 楼] fumac
[陈年泡菜]
13-7-28 00:20
sz517 发表于 2013-7-27 22:32 [url=forum.php?对于设计良好的功放而言,只要线材的阻抗不超过喇叭内阻的5%,是不会带来明显的听觉差异。 比如 喇叭阻抗是8ohm 5%就是 0.4ohm 太大了! 我的mhzpower4 后级输出阻抗是20毫欧姆 假设功放 200wrms 输出 到8ohm 中间损耗掉0.4ohm 40vrms输出,被线电阻分掉大约5%,剩下38v 38vrms 对8ohm的功率只有180wrms 也就是说,功率损耗了10% 别小看这个,立马ED了 ![]() 传统的ab应该是0.2~0.5ohm输出阻抗 影响更明显!假设为0.2ohm输出阻抗,再加上0.4ohm,也就是0.6ohm 40vrms输出,分压剩下37v 。剩下170w 也就是说原来的200w功放只剩下170w输出,功率损耗掉15% 已经非常不可以接受了 ![]() 这个玩意按喇叭端子位置测量,会严重影响阻尼系数,大大变小。 控制力变的很差 所以不同意这个观点 本帖最后由 fumac 于 2013-7-28 00:23 编辑 |
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[4 楼] eltonhuang
[泡菜]
13-7-28 00:09
较早引入准军用级别高端线材/板材/焊料/压接方法的HIFI厂家有麦景图马克列文森RAVOX等,至于是否有调音的作用,估计他们也不清楚.欧美高端广播器材/高端影院/高端场馆器材对这些细节的关注,比这些家用音响厂家更早.
其它的作用尚不得而知,欧美有实力的音响厂家通常比较傻,会帮客户考虑太多的事,顶级家用/广播/影院和场馆器材通常有"主要部件的预计寿命至少30-50年"这种要求,就会逼使他们苛刻地选择线材/板材和焊料和加工方法.基本就和航海和航空电缆差不多的标准了. 所谓的发烧线,就是原来帮这些高端器材公司加工机内和外部电缆的公司(这些做电缆的公司同时也是航海/航空/航天电缆供应商),顺手做出来的多挣点钱.至于调音有什么效果......别说HIFI,耳机坛子里面大把人在换三五十元的线玩呢. 本帖最后由 eltonhuang 于 2013-7-28 00:11 编辑 |
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[3 楼] 罗德琴科
[陈年泡菜]
13-7-27 23:39
也算月※※了,也不代表我的看法。用者自用,并且会继续交流线材的差别,听不出来则是他们的事。
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[2 楼] lsheng
[资深泡菜]
13-7-27 22:53
这种文章多点也好,算是对铺天盖地的广告和枪文的一种平衡吧。
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[1 楼] sz517
[泡菜]
13-7-27 22:32
原文如下:(不代表本人看法)
![]() ![]() ![]() http://www.roger-russell.com/wire/wire.htm 作者Roger Rusell是Formerly Director of Acoustic Research at McIntosh Laboratory, Inc. 原文较长,节选部分原文 Several speaker wire manufacturers make wire that has high capacitance yet almost none of them publish exactly what the capacitance actually is. Capacitance is of concern not so much that it could cause a possible high frequency rolloff but that it can affect the amplifier feedback and cause the leading edge of transients to overshoot. This in turn can make an audible difference in the system sound. It can make the sound brighter, which some audiophiles mistake as greater detail. The degree of influence when using high capacitance wire depends on three factors. 1. The total capacitance of the wire used (capacitance per foot times the number of feet). 2. The complex impedance of the speaker being used. 3. The stability of the amplifier being used to drive the speaker. When there is an audible difference in speaker wire due to wire capacitance, it can be interpreted as an improvement when one wire appears to have more clarity but is actually altering the sound and departing from accuracy. Perhaps this change in sound then paves the way to sell more wire. Further, perhaps the wire companies already know this and what will sell. 喇叭线对声音的影响取决于线材的电容,喇叭的综合内阻和功放的稳定性。有些喇叭线故意设计成具有高内阻值,有可能会听上去更明亮一些,但是那是失真的表现,却可能被认为是听到了更多的细节。而且一台设计良好性能稳定的功放,是很少会受到线材电容带来的影响。只有那些稳定性较差的功放才可能会带来显著的影响。 Many owners of high-end audio and video equipment value “oxygen free” copper. Behind this demand is the belief that it will have enhanced conductivity or other electrical properties that are significantly advantageous to audio signal transmission. However, as indicated above, most C11000 common copper sold today meets or exceeds the 101% IACS conductivity and overlaps C10200 “oxygen free” that has a minimum of 100% IACS conductivity. In practice, there is no significant difference in conductivity between all three of the grades as far as audio use is concerned. It can be solid, stranded, copper, oxygen free copper, silver, etc.--or even "magic" wire--as long as the resistance is kept to be less than 5% of the speaker impedance. There is no listening difference as long as the wire is of adequate size. Bear in mind, as previously mentioned, a well-designed amplifier will not have a problem with any of these wires. 符合国际标准纯度的铜对于音质的影响是很小的,甚至最普通的C 10200(仅3N纯度)的铜就足够满足音响设备的需求。对于设计良好的功放而言,只要线材的阻抗不超过喇叭内阻的5%,是不会带来明显的听觉差异。 银线的导电性虽好于铜线,但是并无法带来声音的提升。 Looking at this from a different perspective, there will always be those who will want expensive wire, not because there is an audible difference, but because they may value pride of ownership and prestige in a similar way to that of owning a Tiffany lamp or a Rolex watch. 其他部分对线材的垫材,煲线器他都认为属于是this is just another way of making money. It can be considered as another “quack” remedy machine. 其中还有一个链接分析了功放阻尼系数的问题,那是Damping, Damping Factor, and Damn Nonsense |


